This needs a drop.

Classified ads at time of posting:

http://backpack.tf/classifieds/?item=Widowmaker&quality=1&tradable=1&craftable=1

1*3.55 refined

1*3.66 refined

1*3.83 refined

1*3.88 refined

6*4 refined

Unsolds at 4 refined:

http://www.tf2outpost.com/trade/25369009 (Young)

http://www.tf2outpost.com/trade/25295200 (1 week)

http://www.tf2outpost.com/trade/25379128 (Young)

http://www.tf2outpost.com/trade/25316717 (6 days)

http://www.tf2outpost.com/trade/25373760 (Young)

http://www.tf2outpost.com/trade/25243542 (1 week, poorly bumped)

http://www.tf2outpost.com/trade/25324591 (5 days, never bumped)

Unsolds at 3.88 refined:

http://www.tf2outpost.com/trade/25375781 (Young)

http://www.tf2outpost.com/trade/25373895 (Young)

Unsolds at Bp tf price:

http://www.tf2outpost.com/trade/25370071 (Young)

http://www.tf2outpost.com/trade/25374406 (Young)

http://www.tf2outpost.com/trade/25375175 (Young)

http://www.tf2outpost.com/trade/25173942 (2 weeks)

Sellers at 3.66 refined:

http://www.tf2outpost.com/trade/25347889 (2 days old)

http://www.tf2outpost.com/trade/25374904 (Young)

Seller at 3.55 refined:

http://www.tf2outpost.com/trade/25249430 (1 week old)

Seller at 1.33 refined:

http://www.tf2outpost.com/trade/11402844 (1 year old, poorly bumped)

This is all I could find on Outpost that are valid